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376 A Short History of The World revolts, and it was only in 1867 that a new constitution creating a, Federal Dominion of Canada relieved its internal strains. It was the railway that altered the Canadian outlook. It enabled Canada, just as it enabled the United States, to expand westward, to market its corn and other produce in Europe, and in spite of its swift and extensive growth, to remain in language and sympathy and interests one community. The railway, the steamship, and the telegraph cable were indeed changing all the conditions of colonial development. Before 1840, English settlements had already begun in New Zealand, and a New Zealand Land Company had been formed to exploit the possibilities of the island. In 1840 New Zealand also was added to the colonial possessions of the British Crown. Canada, as we have noted, was the first of the British possessions to respond richly to the new economic possibilities that the new methods of transport were opening. Presently the republics of South America, and particularly the Argentine Republic, began to feel in their cattle trade and coffee growing the increased nearness of the European market. Hitherto the chief commodities that had attracted the European powers into unsettled and barbaric regions had been gold or other metals, spices, ivory, or slaves. But in the latter quarter of the nineteenth century the increase of the European populations was obliging their governments to look abroad for staple foods ; and the growth of scientific industrialism was creating a demand for new raw materials, fats and greases of every kind, rubber, and other hitherto disregarded substances. It was plain that Great Britain and Holland and Portugal were reaping a great and growing commercial advantage from their very considerable control of tropical and sub-tropical products. After 1871 Germany, and presently France and later Italy, began to look for tmannexed raw-material areas, or for Oriental countries capable of profitable modernization. So began a fresh scramble all over the world, except in the American region where the Monroe Doctrine now barred such adventures, for politically unprotected lands. Close to Europe was the continent of Africa, full of vaguely known possibilities. In 1850 it was a continent of black mystery ; only Egypt and the coast were known. Here we have no space to tell the amazing story of the explorers and adventurers who first pierced the African darkness, and of the political agents, administrators, traders,